An instrument designed to estimate the potential increase in horsepower achievable when using a fuel blend containing a high percentage of ethanol (specifically, E85) in an internal combustion engine. These tools typically consider factors such as the engine’s current power output, fuel system capabilities, and other relevant parameters to provide an estimated horsepower improvement. For instance, a user might input their engine’s specifications and current fuel type to receive an approximation of the potential horsepower gain if they were to switch to E85.
The significance of such estimations stems from the unique properties of E85 fuel. Its higher octane rating and cooling effect within the combustion chamber can allow for increased engine performance. Understanding the potential performance benefits before undertaking modifications or switching fuels enables informed decision-making regarding vehicle tuning, fuel system upgrades, and overall performance optimization. The emergence of these tools reflects the growing popularity of E85 as a performance fuel and the need for quantifiable metrics to guide its implementation.